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Should each and every table have a primary key?

... Just add it, you will be sorry later when you didn't (selecting, deleting. linking, etc) share | improve this answer | follow | ...
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How to add a spinner icon to button when it's in the Loading state?

...o make your custom ones basing on mine, it's super easy. var svg = d3.select("svg"), columnsCount = 3; ['basic', 'basic2', 'basic3', 'basic4', 'loading', 'loading2', 'spin', 'chrome', 'chrome2', 'flower', 'flower2', 'backstreet_boys'].forEach(function(animation, i){ var x = (i%column...
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How to use LocalBroadcastManager?

...d to add Compatibility/Support Library by right-clicking on my project and selecting: Android Tools -> Add Support Library Once it was added, then I was able to use LocalBroadcastManager class in my code. share ...
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What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?

...zontal and vertical options for the Entry and changed the text to show the selected options, so you can see how the Entry moves and resizes. Here is the code used for Start: <Label Text="Vert: Start, Horz: Start" VerticalOptions="Start" HorizontalOptions="Start" BackgroundColor="White"/> And...
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How to store Node.js deployment settings/configuration files?

... Then in this file, its just javascript.. use a case or if statement to selectively load the appropriate variables. You could even make a separate config subfile for each env, and in the if statement, reload the subfile here into a subconfig var, and export that subconfig var to the main confi...
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Do checkbox inputs only post data if they're checked?

... Workaround: use <select>with two options on and off :-) – andy May 23 '18 at 9:26 add a comment ...
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What is the mouse down selector in CSS?

...ocus {color:#0000FF;} /* link has focus */ a:active {color:#0000FF;} /* selected link */ a:visited {color:#00FF00;} /* visited link */ See also: http://www.w3.org/TR/selectors/#the-user-action-pseudo-classes-hover-act s...
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Multiple submit buttons in an HTML form

...Press event of the form element and would detect whether the Enter key was selected. If this is the case, it will submit the form. Here are two pages that give techniques on how to do this: 1, 2. Based on these, here is an example of usage (based on here): <SCRIPT TYPE="text/javascript">//&l...
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How can I get selector from jQuery object

Is there an easy way to get selector from $(this) ? There is a way to select an element by its selector, but what about getting the selector from element ? ...
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How to do Mercurial's 'hg remove' for all missing files?

...e hg command itself), but in brief: -n means "filename only" -d means "select files that have been deleted" share | improve this answer | follow | ...